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2011 purple code Mound Design <br />www.SepticResource.com (vers 15,2) <br />Property Owner: Gonyea Homes <br />Site Address: 765 Lakeview Parkway <br />Comments: <br />Date: 11/20/2017 <br />PID: 0611723340010 <br />instructions: = = enter data = adjust if desired = = computer calculated - DO NOT CHANGE! <br />bedroom Type L I Residential System <br />750 GPD design flow <br />Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />41 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />> 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed <br />6) 10.0 ft rockbed width 63.0 ft rockbed length <br />7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />8) laterals 61.0 feet long 21.0 perfs / lateral 63 perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size Et spacing, Et pipe size on line 12, max perfs/lateral = 30 line #8 must be less OK <br />io, 4.0 doses per day (4 minimum) <br />1 1 r i88 gallons per dose (treatment volume) <br />2.00 5x <br />12) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13) 97 feet of 2.0 inch supply line leads to F 16 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />1.1) 204 gallons TOTAL pump out volume (treatment + drainback) <br />l i 17 feet vertical lift from pump to mound laterals, leads to a: <br />lbl 36 GPM @ 27 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />Leads to a <br />18) 8.0 inch swing on Demand float, or timed dosing ofF5.7 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow)hrs OFF test and adjust as necessary) <br />19) [flinches <br />inches from bottom of tank to "Pump OFF'" float <br />' 0 inches from bottom of tank to "Pump ON" float, or 12 inches to "Timer ON" float if time dosed <br />''�s from bottom of tank to "Hi Level" float, or [:33 inches to "Hi Level" float if time dosed <br />") 714 gallons reserve capacity (after High Level Alarm is activated) <br />